Electrothermostatic controller.



J. C. SCHAF, JR. & W. E. MUNK.

ELECTROTHERMOSTAH C CONTROLLER.

APPLICATION HLED SEPT. 16. I916.

Patented Apr. 17, 1917.

' INVNTOR5 JOSE'P/Y Saar-fir Mummy E Mu/vK m ATTORNEYS To all it maymam-"m:

Be it h; own :71 J1, and ii i Unite lave invented C01" '11Eleotrotheirnosi'atic Con hereby declare that the 1 clear, exactdescription ence being had to the accompanying drawings, in which iikeletters 1" his ii'i'veniion reiaoos to a troller or eieetiothermostoiicwhich wiii make or :11: on e eetrie one so as to oontroi. the heat byreistanee therein. Such ooni'i'olier is espeoiaily adapted to be used iiconne on with electi'ieaiiyheateci artioies 7 sary to keep him artieuniform tenper V. i L ing pads, irons main fed i i aregulatingthermostatic a circuit ture. Another fer-5 5i of the invention provisionof d 0 conneat regulator e i onion is in the construction 03. theZ'GSlStLZICG eoii box whereby nocoi'e is necessary 1 the (2031-struction is greatly simpiified.

The fuli atui'e of this invention wil, he

understood from the accompanying (Ira/K ings and the foiiowingdescription and claims:

Figure 1 pian View of the inetrimien h Fig. 2 is :1 cross sectionthrough {he .iine 22 of Fig. Fig. 3 is av piim ViBW' of the bottom sideof the instrun'ienb with ihs-f lower covering removed. Fig. 4 is a planView of the instrument with. the top coverio moved and snowing theeioctricai no thereof. Fig. is a cross section linl'ijiigii line 5-5 ofL In the drawings there is shown an eieotro'thermostntic heat reguietovcomprising a box or covering having upper iixi or top 10 and a box likecasing 11" Secured to the lid 19 there is a block 12 having a the lid oroovering means of the bolts 14' extending downwardly li aizeiiioii Apr.1?, 19172 h m: m "l n at 'I J zit ijho other pleieii #:hrougn 1m:- 39noinis and 23, pi ate 117', screw ML exte i Q01 15,

The her if) is mom :1 y in Contact Wiih screw "2 So that :2 en'emt ismade The curi mesons" p: see"; in rough the J i: 1'' 5 which is heat-11dtoe it soon as he IGSLJLADCJ bar to be cooled sufficiently to its normalposition and the circuit will he again nnuie it heat is regenerated forthe the hat. It will, therefore. he there is a making aw circuit whichpermiis on:

enough current to pass through the circuit to maintain the article 4:0to he heated at substantially uniform temperature.

Secured to said. block 12 over the bar 19 ",here is an upwardly andforwardly ing' arm 31 through which an adjusting screw 82 extends so asto bear against said bar and adjustably regulate the relative position.of the contact points 22 and By this regulating means the bar isadjusted so as to operate roughly between. certain de grees oftemperature. After bar 19 has properly adjusted by screw 32 furtheradjustment of the re ulation and control. of the temperature may be madeby the thumb screw 251which further regulates the rela tive positions ofpoints 22 and 23.

The invention claimed is:

1. A electric controller having an insulating b ock with a recesstherein, a resistance coil in said recess, a terminal secured to one endof said block and connected with one end of said coil, a thermostaticbar secured at one end to the other end of said. block, the free endportion. of said. bar normally making contact-with the said terminal.and thereby connecting the bar and coil in the series, and means securedto said bar for limiting the movement thereof.

2. An electric controller having an insulating block with a recesstherein, a resistance coil in said recess, a terminal secured to one endof said block and connected with one end of said coil, a thermostaticbar secured at one end to the other end of said block, the free endportion of said bar normally making contact with the said terminal andthereby connecting the bar and coil in the series, an arm. rigidlysecured on the fixed end of said bar and extending upwardly therefrom,and a screw extending through said arm for engaging said bar andlimiting the separating movement of said her and its contact point fromsaid terminal.

3; An electric controller having a solid block of insulating materialprovided with a recess therein, a resistance coil in said re cess, ametal plate secured to one end of said blocl: and connected. with oneend of said coil, and a thermostatic barrigidly secured to one end ofsaid block, the free end portion of said bar being no *mally in contactwith said plate, thereby connecti'np' the bar and coil in series.

l. An electric controller having. a solid block of insulating materialprovided with a recess therein, a resistance coil in said recess, ametal plate secured to one end of said block and connected with one endof said coil, a thermostatic bar rigidly secured to one end of saidblock the free end portion of said bar being normally in. contact withsaid plate, thereby connecting the bar and coil in series, and anadjusting screw passing; through said block and adjustable through said.plate having a contact point thereon whereby the distance between saidlast mentioned contact point and said bar may be regulated.

5. An electric controller having a solid insulating block with a recesstherein, a resistance coil in said recess, a metal plate Secured to oneend of said block and connected with one end of said coil, athermostatic bar rigidly secured at the other end to said block, thefree end portion of said her being normally in contact with said plate,thereby connecting the bar and coil in series, an arm secured to thefixed end of said bar extending thereover, a screw extending throughsaid arm adapted to engage and adjust the position of said bar, and acontrolling screw extending through the other end of said block adaptedto screw through said plate and having a. contact point thereon adaptedto regulate the distance between said contact point and the free end ofsaid bar for controlling the amount of heat generated by said coil forbreaking said contact.

In witness whereof, we have hereunto at fixed our signatures.

